5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yihang Li <liyihang9@xxxxxxxxxx>
[ Upstream commit d34ee535705eb43885bc0f561c63046f697355ad ]
In function hisi_sas_controller_prereset(), -ENOSYS (Function not
implemented) should be returned if the driver does not support .soft_reset.
Returns -EPERM (Operation not permitted) if HISI_SAS_RESETTING_BIT is
already be set.
In function _suspend_v3_hw(), returns -EPERM (Operation not permitted) if
HISI_SAS_RESETTING_BIT is already be set.
Fixes: 4522204ab218 ("scsi: hisi_sas: tidy host controller reset function a bit")
Signed-off-by: Yihang Li <liyihang9@xxxxxxxxxx>
Signed-off-by: Xiang Chen <chenxiang66@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/1702525516-51258-3-git-send-email-chenxiang66@xxxxxxxxxxxxx
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/scsi/hisi_sas/hisi_sas_main.c | 4 ++--
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 19081790f011..530f61df109a 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -1584,12 +1584,12 @@ EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_done);
static int hisi_sas_controller_prereset(struct hisi_hba *hisi_hba)
{
if (!hisi_hba->hw->soft_reset)
- return -1;
+ return -ENOENT;
down(&hisi_hba->sem);
if (test_and_set_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags)) {
up(&hisi_hba->sem);
- return -1;
+ return -EPERM;
}
if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 0e57381121d5..88af529ab100 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -4983,7 +4983,7 @@ static int _suspend_v3_hw(struct device *device)
}
if (test_and_set_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags))
- return -1;
+ return -EPERM;
scsi_block_requests(shost);
set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
--
2.43.0
